1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Jlenok [28]
3 years ago
8

If a ski lift raises 150 passengers averaging 590 N in weight to a height of 244 m in 96.3 s, at constant speed, what average po

wer is required of the force making the lift

Physics
2 answers:
Lostsunrise [7]3 years ago
4 0

Explanation:

Below is an attachment containing the solution.

SVEN [57.7K]3 years ago
3 0

Answer:

224236.76 W

Explanation:

Power: This can be defined as the rate of change of energy. The S.I unit of power is Watt(W).

From the question,

P = E/t ......................... Equation 1

Where P = power, E = Energy or work, t = time.

But,

E = Wt×d.................. Equation 2

Where Wt = Total weight of the passengers, d = distance.

Substitute equation 2 into equation 1

P = (Wt×d)/t.............. Equation 3

Given: Wt = 590×150 =88500 N, d = 244 m, t = 96.3 s.

Substitute into equation 3

P = (88500×244)/96.3

P = 224236.76 W

You might be interested in
11. You want to calculate the displacement of an object thrown over a bridge. Using -10 m/s2 for acceleration due to gravity, wh
Natalka [10]

Displacement is d  



Vf² = Vi² + 2 g d  



(-20²) = (+10²) + 2 (-9.8) d  



-19.6 d = 300  



d = -15.3 m  



negative means lower



time is t  



d = Vi t + 1/2 g t²




-15.3 = 10 t + (-4.9) t²




4.9 t² - 10 t -15.3 = 0  



t = 3.06 s



3 0
3 years ago
A material through which charges cannot move easily?
Naily [24]

Answer: A material that does not easily allow a charge to pass through it is called an Plastic and rubber are good insulators. Many types of electric wire are covered with plastic, which insulates well. The plastic allows a charge to be conducted from one end of the wire to the other, but not through the sides of the wire.

Explanation:

4 0
3 years ago
An electron in a vacuum is first accelerated by a voltage of 51400 V and then enters a region in which there is a uniform magnet
zimovet [89]

Answer:

       F = 8.6 10⁻¹² N

Explanation:

For this exercise we use the law of conservation of energy

Initial. Field energy with the electron at rest

         Em₀ = U = q ΔV

Final. Electron with velocity, just out of the electric field

         Emf = K = ½ m v²

          Em₀ = Emf

          e ΔV = ½ m v²

          v =√ 2 e ΔV / m

          v = √(2 1.6 10⁻¹⁹ 51400 / 9.1 10⁻³¹)

           v = √(1.8075 10¹⁶)

           v = 1,344 10⁸ m / s

Now we can use the equation of the magnetic force

         F = q v x B

Since the speed and the magnetic field are perpendicular the force that

        F = e v B

        F = 1.6 10⁻¹⁹  1.344 10⁸ 0.4

       For this exercise we use the law of conservation of energy

Initial. Field energy with the electron at rest

         Emo = U = q DV

Final. Electron with velocity, just out of the electric field

         Emf = K = ½ m v2

          Emo = Emf

          .e DV = ½ m v2

          .v = RA 2 e DV / m

          .v = RA (2 1.6 10-19 51400 / 9.1 10-31)

           .v = RA (1.8075 10 16)

           .v = 1,344 108 m / s

Now we can use the equation of the magnetic force

         F = q v x B

Since the speed and the magnetic field are perpendicular the force that

        F = e v B

       F = 1.6 10-19 1,344 108 0.4

       F = 8.6 10-12 N

5 0
3 years ago
Larry drops a 5kg ball off of a building. The ball hits the ground 4.7s later. How tall is the building?
musickatia [10]

Explanation:

Given:

v₀ = 0 m/s

a = 9.8 m/s²

t = 4.7 s

Find: Δy

Δy = v₀ t + ½ at²

Δy = (0 m/s) (4.7 s) + ½ (9.8 m/s²) (4.7 s)²

Δy ≈ 110 m

8 0
3 years ago
Which method of heat transfer takes place when particles of matter vibrate and collide with each other in direct contact
Cerrena [4.2K]
Conduction, hope this helps! :)
6 0
3 years ago
Read 2 more answers
Other questions:
  • An incredible amount of electrical energy passes down the funnel of a large tornado every second. Measurements taken in Oklahoma
    6·1 answer
  • A biological community is made up of all the
    9·1 answer
  • How much heat is released when 6.00 grams of ammonia and 5.00 grams of oxygen?
    10·1 answer
  • What are the benefits and drawbacks of using renewable energy sources to generate electricity?
    11·1 answer
  • A body moving in the positive x direction passes the origin at time t = 0. Between t=0 and t=1 second, the body has a constant s
    9·2 answers
  • In some region of space, the electric field is given by E = Axi + By2j. Find the electric potential difference between points wh
    9·1 answer
  • Which avtivties belongs on top of physical activity pyramid
    15·2 answers
  • The energy of a photon is 9.7eV what is the wavelength
    14·1 answer
  • The law of inertia states that a moving object will:.
    7·1 answer
  • A car is traveling along a straight road at a velocity of 30m/s when its engine cuts off. For the next ten seconds, the car slow
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!